Runner bar for plate-glass-grinding machines



- Sept. 27,119.27. 1,643,928

J.;DlDlON RUNNER BAR FOR PLATE -GLASS GRINDI NG MACHINES Filed NQV. lO,1924 2 Sheets-5heei l Patented Sept. 27, 1927.

UNETIETED; mrssv JACOB DIDION, (AF/VALLEY TARK, MISSOURI;

iwimnn- BAR FOR rrnrn-orassenrnmn e- MACHINES.

hpplicaticn'filsd November 10, 192% Seriallu'o. 748,222.

Myinvention relates to improvements in runllfiilbarsfor plate glass gchines-and ha-s for its primary object the construction of. runnerswhich can be readily attachedtofiandremoved from the machine.

iaffiirtheli object is tolconstruct runner V .v for. plate glass giiding machines in whichthe runner bars are mounted on platesand-Securedthe eto in such a manner as to therefrom for renewing I ofoneof the gr nding disks or runners with lo belreadily removed or.inllhe caseof a defective runner bar or, block, and in whichonly onescre v is neces sary to hold a single lineof runnerbars in attachedposition. Enema-rams runner bars to the disks. or runner by means ofscrews,

the deck being of wood, the screw holes.

wouldin a shorttime lose their thread so that a screw would no longerhold. therein 2 andtherunner bar's would have to be shifted sothat thescrews Could get a new hold and it quite'frequently. happened that itwas impossiblejto' secure the runner bars without striking some of theol'clscrew holes. This necessitated considerable waste of time inplugging up these changes, the entire deck of the runner or i d lisrenewed' Inimy 'levice, securing strips arefastened to'th e deckpermanently and the runner bars' are: removably secured thereto,'thusthe deck a V r H freel t-hereover. The platform 16 is so. arfof thegrinding disk or runner can be used indefinitely as the securing stripsdo not.

;,ha.ve to be removed when renewing worn out rui1ner.b;irs or replacingdefective ones In'the" drawings 1 is a top 'planyiew 'of' a grindingmachine such as usedfor plate glass, with parts broken away;

Fig. 2 isa side elevation of the same;

Fig.3 is a top planviewof the runner barsupp'ortsshowing the" manner .ofinterlock ing the ends'gthereof; 45.

bars in position; V

Fig: 5 is a sideelevation of Fig; 4;

Fig 6 isan enlarged longitudinal-vertical section; ofa runner barsupport showingthe 50. manner' off-filling in the spaces betweenadjacent runnerbars; 7

-7 is a similar-view takenof the locking-end ofthe runner bar supportand show-' ing the -mannerof preventing the runner .bars from {shiftingand becoming loosened;

inding mabroken away were attached .so that theta-hie can be moved fromplace'to" holes and after a few disk became useless andhadto be Fig. 4-'is'a similar yrew with'the runner igfiis an ge rtical crosssecti ntakenon th lin 8; Fig}; H Fig. ,9 is an enlargedto Pl View Gila portion ofone of the runnerba With'pgft Fig. -10 is an enlarged perspective Viewof] oneiof the filler plates; Fig.. ll is an enlarged perspective viewof}; theiocking plate; i i

Fig. l2 is'a bottom plan view'ofa portion f place. In the floor of thefactory is provided pit 15, in which is located a platform 16, thisplatform isprovi'ded with. tracks so that the table 13 can be movedthereon. Projectin'g through-the platform is a supporti? which extendsabove the floor ofithe factory, but of such a height thatthe tablem'ayranged that' it can be raised and..'lowe'r'ed1, or

tail later.

The underside'of the table 13 is provided] iwithgear teeth 18 whichdesign to mesh with a bevel gear 19 which'is driven by means of a pulleyor other power 'device'QO. g Locatedon opposite sides of the pit 15 "arestandards '21 which'are connected at their upper ends bymeans-of-a'cross ba1222 and; throughwhich shafts'23 pass. These shaftsare mounted in bearings 2% and are free to rotate therein and also tomove up {and down; Theshafts'QS are also provided withj gf collars 25which are spaced apartand which are secured to the shaft.v Between theseco'l-i lars is loosely mountedon the shaft a block 05- '26 which haspins 27 projecting fromjop mounted intermediate its ends in'the'stand-E2110,

ard 21, as at 31, its free end extending some distance beyond theseuprights or standards and has attached thereto means by which the levercan be raised and lowered. This is preferably done by means ofahydraulic cylinder, although other mechanism may be to'the underside oiwhich is secured a grinding disk or runner 34. Arranged in pare, allelrows across the face of the disk are runner bar supports 35, one end ofwhich is provided with a-dove-tailed tongue 36, the other end with adove-tailed groove 37 by means of which the runner bar supports may beinterlocked. The runner bar supports are provided with a plurality ofpads or blocks 38, and intermediate these pads or blocks are depressions39 leaving ribs 40 along each edge of the runner bar support, which ribsare locatedbetween the pads 33.

Extending upward from the pads are bosses or lugs 41, the inner edge ofthese lugs is dove-tailed or undercut as at 42 (see Fig. 8). Theprojections 41 or rather the undercut portion is also arranged at anangle to the'longitudinal axis of the bar so that the space between thepoints 43 is narrower than the space between the points 44, this is topermit the runner bars to be wedged into position and held againstaccidentally coming out.

One of the runner bar supports of each set is provided with a plain end45, that is, it

has'no dove-tailed tongue or groove, and is so arranged that thedepression 46, which is at the end of that bar, is closed by means ofthe rib 47. This is for the purpose of hold ing thev locking plate 48 inposition and to take off all end thrust from the screw 49 which passesthrough the plate and into the screw threaded opening 50 formed in thedepression The manner of locating this block is clearly shown in Fig. 7.

The runner bars consist of a strip 51 which is provided at spaced apartintervals with substantially rectangular projections or blocks 52, theseprojections are relatively thick and with them the grinding of the glassis done.

' Projecting outward from the strip 51 and located at'oppOsite sides ofthe projection or block 52 are wings 53 which have their outer sidesinclined both vertically and longitudinally so as to fit snugly betweenthe projections 41. I Extending across the strip 51 and adjacent thebosses 52 are breaking grooves or slots 54, these are for the purpose ofpermitting the strip to be broken at that point when it is necessary toremove one of the blocks for any purpose.

manner of inserting these falling out, side movement of the strips beingprevented by means of the ribs 40. The

plates will be explained in detail later. p The locking plate 48 isprovided with an opening 58 through which the screw 49 passes, and withonly one lip 59, the opposite side 60 of the block being straight so asto abut the rib 47. The filler plates 55 may be made of various widths,as sometimes oneof the runner bars w1ll fit tarther into the spacebetween the projections 41 and thus make the space between adjacent endsofthe bars less; at other times it may not lit in so far' thus wideningthe space. The locking plate 48 can also be'made in various widths torthe same purpose.

The runner bar supports arefprovided at intervals with openings 61 whichare formed through the ribs 40 and are for the purpose of permittingscrews to pass therethrough so to the k that the supports may beattached grinding disk or runner34.

In attaching my improvement 'to the grinding disk, the table 13 is firstrun underthe disks 34, the disks lowered on the surface of". the tableand theukey 32 driven out. The

lever 30 is then moved'so as to raise the shaft out of the collar 33 andthe table then pushed away bearing with it the grinding disk or runner34. At a convenient point the disk 34 is removed from the table and.

inverted and the runner bar supports secured to its face. These runnerbar supports are arranged parallel to each. other and spaced apart. Thearrangementpreferably being such that when the runner bars are in'position the blocks thereof will be staggered (see;

Fig. 12). j I

In placing the runner bars in position I start from the end'opposite theend 45 and placea runner bar in the position shown at the extreme rightin Fig. 12. This bar is then forced forward until the wings 63' T haveengaged securely with therundercut edges 42 of the projections 41 thuswedging the bar in place. A'filler block is thenin'. serted in position,abutting theend of the bar just secured and with one of the lips un- Hder said bar and the next bar placed in position in the same manner,itsend passing over the remaining lip. This is continued until theentire runner bar support is filled,the last thing put in position,being the locking plate 48. In this manner all of the rows of runner barsupports are filled, it, of-

course, being understood that the runner bar supports gradually decreasein total length as they work out from the center of the runner. Thedevice is then ready to be taken back to the grinding machine, it isagain inverted and placed on the table withthe runner barsrestingthereon, moved back tothe machine and secured to the shaft 23After which the shaft is elevated so as to raise the grinding orrunnerdisk above the table, thetable Is now moved to a convenient.

point where sheets of plate glass are attached thereto in the mannerwell known tothe art. After-which the table is again brought underneaththe-machine and rests on the platform 16, this platform is then lowereduntil the table comes to rest on the support 17;

permittedto rotate. The platform 16 is then lowered away from beneaththe wheels 14:. 'This placing the table on the support also causes thegears 1 8 and 1 9' to engage so that" when the pulley 20 is rotated thetable willturn. Suitable abrasive material is then !1 terial, grind it;Should it occur that one of the blocks of a runner bar has a flaw in it,such as a sand or blow hole, or other defect which renders it useless,this block may be readily removed by removing the looking plate 48 andlongitudinally sliding each runner bar from its operative position between the spaced lugs 41 removing the bar and breaking it along thegrooves 54 so that it is not necessary to destroy the entire runner bar,a single runner block may then be inserted in its place, it beingnecessary, of course, to insert a filler plate at each end of thisrunner block so as to hold it in position. The runner bars can also bereadily detached when worn out, by merely removing the lock plate 48 anddriving the runner bars toward the end 45. In other words, the removingof the runner bars is the exact reverse of placing them in position. Therunner bar supports are made in interlocking sections to take care ofthe varying lengths of runner bars which is occasioned by placing themparallel to each other across the face of the disk.

In Fig. 13 I have shown a modified form v This support being so arrangedthat the-table will rest securely thereon and be 64- serve the samepurpose as the recesses 39 and the locking means is also the same. Thislast construction is used where a metal grinding disk is employedinstead of a readily and will not destroy the broken off block or theremainder of the runner bar,-

asis: the case at the present time. In the runner bars now in use screwholesare formed through the portion of the runner;

bar between-c the blocks, these screw holes are arranged diagonally toeach. other and when. a bar breaks, it invariable breaksthrough the twoholes and the breaks are" It is then necessary to cut off; the twoblocks adjacent this diagonal breakdiagonal.

in' order to preserve the screw holes ad jacent the remaining blocks; Inmy device,

with the grooves as i1'lustrated, the break will be straight across andsince no screws are employed for holding the runnerbars to the disk, itis not necessary to discard, any of the blocks. Furthermore, by havingmy runner bars quickly detachable, a gri-n'd ing disk can be readilyequippedwith' anew set of runner barsin -a relatively short time;

approximately between two and four hours whereas formerly, or with thepresent style now in use, it required several days to renew the runnerbars besides which, the old type quickly wears out the grinding diskdeck because of the necessity of using screws to hold the runner bars inplace.

Having fully described my what I claim is 1. A device of theclassdescribed comprising a disk, a plurality of runner bar sup ports,each of which is provided with a series of spaced apart dove-tailed,wedgeshaped recesses located above one face of said bar, means forsecuring said runner bar supports to said disk, a plurality of runnerbars, each of which is provided with a series of spaced apartprojections, a wing formed integral with each side of said runner barsand located adjacent to and opposite each invention,

less than the distance between the adjacent dove-tailed, wedge-shapedrecesses whereby said runner bar can be placed in position on or removedfrom said runner bar support without moving the same the full length ofthe runner bar support, and a locking plate located in the runner barsupport for holding the runner bar in position.

2. A device of the class described com prising a disk, a plurality ofrunner bars, a plurality of longitudinally spaced wings extendinglaterally from each side from each of said runner bars, laterally andlongitudinally spaced apart means secured to'the face of said disk, thelongitudinal spacing of projection, the length of said wings beingjwhich is greater than the length of the wings carried by the runner barswhereby said runner bars maybe secured to said disk by inserting thewings between the spaced ,apart means and effecting by a relativelyshortv'longitudinal movement to seat the wings in the spaced apartmeans, and may be re moved by the inverse process, and means located atone end of saidrunner bars for locking the same in position.

A device ofthe class described comprising a dislga plurality of runnerbarsupports extending across the under face of said disk in parallelrelation to each other, longitudinally spaced projections integral withthe side of eachof said runner bar supports extendingvfrom the facethereof, said projections forming dovetailed wedge-shaped recesses,avplurality of runner bars having dove-tailed, wedge-shapedlongitudinally spaced apart wings projecting from each side thereof,said wings being of less length than the longitudinal space betweenadjacent projections on said runner bar sup ports and adapted to engagewith-the projections on the supports for securing the:

bars thereto whereby a runner barcan be attached to and removed fromsaid support 7 without moving the same the full length of saidjsupp'ort,and means located adjacent one end of said bars for preventinglongitudinal movement thereof whereby accidental disengagement of thewings from the of said runner bar supports for interlocking the sametogether, runnerbars provided on their edges with outwardly extendinglongitudinally spaced apart wings of less length than the longitudinalspace between said projections whereby a runner bar may be placedinposition and the wings forced into therecesseswithout moving therunner bar the full length of thesupport, and means located at the endof one of said runner.

bar supports for preventing the runner bars from moving longitudinallywhereby the same are prevented from becoming accidentally disengaged.

In testimony whereof, I havesigned my, name to this specification.

'JAooB DIDION. I

